JP2011025767A - Shoe plate fixing structure for crawler type traveling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve work efficiency in mounting a single grouser type shoe plate suitable to traveling on a mountain road and the like liable to cause mud jamming. <P>SOLUTION: In a shoe plate fixing structure for a crawler type traveling device in which track links 30 are pin-connected with each other in an endless shape and a shoe plate 32 is securely attached to the outer surface of the track link 30, a shoe plate 36 of a type with a shape and structure different from those of the shoe plate 32 is detachably fixed to the outer side surface of the shoe plate 32 with bolts 39. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a shoe plate fixing structure for a crawler type traveling device, and more particularly to a shoe plate fixing structure for a crawler type traveling device equipped in a construction machine or the like.

  2. Description of the Related Art Conventionally, a crawler type traveling device equipped in a lower traveling body of a construction machine such as a hydraulic excavator has a crawler rotatably wound around a driving wheel and an idler wheel, and as shown in FIG. The track links 1, 1... Are connected to each other by link pins 4, 4..., And the shoe plates 2, 2. ing.

  As a normal type of the shoe plates 2, 2..., A triple-glosser type shoe plate, that is, a grouser (protruded portion) 3, 3, 3, which is a thin band-like projection on the grounding surface side of the shoe plate 2, 2. Three-protruding ones are used. The grousers 3, 3, and 3 are formed in a direction perpendicular to the traveling direction of the construction machine, and are configured to be able to stably travel by gripping the road surface by the grousers 3, 3, and 3 (Patent Literature). 1 (see FIG. 3).

JP 2001-310776 A

  The crawler type traveling device provided with the above triple-grocer type shoe plate is suitable for traveling on a road at a general work site such as an urban area or a flat ground. May cause clogging. For this reason, in order to avoid problems due to mud clogging, a different type of shoe plate having a different shape and structure from that of a triple-grocer shoe plate may be used.

  For example, when a construction machine travels on a mountain road or a forest road after rain, mud is clogged on the surface of a normal triple-grocer shoe plate and it becomes slippery. For this reason, in order to avoid mud clogging, it differs in shape and structure from the triple-glosser-type shoe plate, for example, a single-grower-type shoe plate with a single protrusion on the surface, or a similar shape / A plate having a structure is used.

  When using a single-grocer shoe plate, remove the existing triple-grocer shoe plate that is fixed to the track link, and then attach and replace the single-grocer shoe plate on the outer periphery of the track link. ing. Therefore, much labor and time are required for the replacement work of the single-grocer shoe plate.

  Further, when the plate material is used, the plate material is directly attached to the grounding surface side of a triple-grocer shoe plate fixed to the track link. However, in this case, since the plate material is fixed to the grounding surface side of the triple-grocer shoe plate by welding, much work and time are required for the work of attaching the plate material.

As described above, in the prior art, when a single growthr type shoe plate or a plate material having a shape and structure adapted to the road surface conditions at the work site is used, the single growthr type shoe plate is removed after each removal of the triple growth type shoe plate. Type shoe plate must be attached to the track link or the plate material must be welded to the grounding surface side of the triple-grocer shoe plate. There was a problem that it dropped.

  Therefore, there is a technical problem to be solved in order to improve work efficiency when attaching a single-grocer shoe plate or the like that is difficult to cause mud clogging, and the present invention aims to solve this problem. .

  The present invention has been proposed to achieve the above object, and the invention according to claim 1 is characterized in that the track links are pin-connected to each other in an endless manner, and a shoe plate is fixed to the outer surface of the track link. A crawler-type traveling device shoe plate fixing structure, wherein a shoe plate of a different shape and structure different from the shoe plate is fixed to the outer surface of the shoe plate by a bolt so as to be detachable. A shoe plate fixing structure for a traveling device is provided.

  According to this configuration, when using an unusual shoe plate that is unlikely to be clogged with mud, the unusual shoe plate is directly attached to the outer surface of the existing ordinary shoe plate with a bolt.

  According to a second aspect of the present invention, there is provided a shoe plate fixing structure for a crawler type traveling device according to the first aspect, wherein the odd-shaped shoe plate is a single-grocer type shoe plate.

  According to this configuration, since the odd-shaped shoe plate is a single-grocer shoe plate, mud can be prevented from clogging the single-grocer shoe plate even when the work site is a mountain road or a forest road after rain.

  According to the first aspect of the present invention, since the irregular shoe plate can be fixed to the outer surface of the existing shoe plate fixed to the track link with a bolt, the existing shoe plate is removed from the track link as in the conventional example. There is no need for welding work. Therefore, the irregular shoe plate can be easily and quickly mounted, and therefore the irregular shoe plate can be efficiently mounted.

  In the invention described in claim 2, the single-grocer shoe plate is unlikely to be mud clogged. Therefore, in addition to the effect of the invention described in claim 1, the construction machine can be moved on the road surface even when traveling on a mountain road or forest road after rain. There is no risk of slipping, and traveling stability can be ensured.

The side view of the hydraulic shovel which showed one Example of this invention and was equipped with the crawler type traveling apparatus. The detailed view which shows the principal part of the crawler type traveling apparatus before attaching the single growthr type shoe plate which concerns on a present Example. FIG. 3 is a partial cross-sectional explanatory view showing an internal structure of the crawler type traveling device of FIG. 2. The detailed view which shows the principal part of the crawler type traveling apparatus after attaching the single-grocer type shoe plate which concerns on a present Example. The partial cross section explanatory drawing which shows the internal structure of the crawler type traveling apparatus of FIG. The principal part detail drawing which shows the fixation structure of the single-grocer type | mold shoe plate which concerns on a present Example in a partial cross section. Sectional drawing which shows the shape of the single-grocer type | mold shoe plate of FIG. FIG. 7 is a plan view of the single growthr type shoe plate of FIG. 6. The partial cross section side view of FIG. Explanatory drawing which shows the principal part of the crawler to which the triple-grocer type | mold shoe plate which concerns on a prior art example was attached.

  In order to achieve the object of improving the working efficiency when attaching a single-grocer type shoe plate or the like, where mud clogging is unlikely to occur, the present invention is such that track links are pin-connected endlessly, and the track links A shoe plate fixing structure of a crawler type traveling device having a shoe plate fixed to an outer side surface, and a different type shoe plate having a shape and structure different from that of the shoe plate is detachably fixed to the outer side surface of the shoe plate by a bolt. Realized by that.

  A preferred embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a hydraulic excavator 10 as an example of a construction machine equipped with a crawler type traveling device according to the present embodiment, and an upper revolving structure 13 is mounted on a lower traveling structure 11 via a revolving mechanism 12 so as to be freely rotatable. Yes. The upper swing body 13 is provided with a cab 14 on one front side thereof, and a boom 15 is pivotally attached to the front center portion so as to be able to be raised and lowered. Further, an arm 16 is connected to the tip of the boom 15 so as to be rotatable up and down, and a bucket 17 is attached to the tip of the arm 16.

  Reference numeral 20 denotes a track frame that constitutes a main body portion of the lower traveling body 11, and the track frame 20 includes a center frame 21 provided with the turning mechanism 12 and left and right sides provided on both sides of the center frame 21. The side frame 22 is configured. The side frame 22 is provided with a drive wheel (sprocket) 23 on the rear end side in the front-rear direction and an idler wheel 24 on the front end side in the front-rear direction. A crawler 25 is wound between the drive wheel 23 and the idler wheel 24, and a guide roller 27 is provided on the upper plate portion 26 of the side frame 22 so that the rotation of the crawler 25 can be smoothly guided. It is configured.

  2 and 3 show a state before the single-grouser shoe plate is attached to the crawler 25. FIG. As shown in both drawings, the crawler 25 is formed in an endless shape by connecting end portions of a plurality of paired left and right track links 30, 30... Via link pins 31, 31. .. Are fixed to the outer surface of each track link 30, 30...

  Each triple-grocer shoe plate 32, 32 ... is formed in a rectangular shape in plan view, and the longitudinal direction of the triple-grocer shoe plate 32, 32 ... is parallel to the axial direction of the link pins 31, 31 ... This coincides with the left-right width direction (the arrow W direction in FIG. 3). Reference numeral 33 denotes a guide roller.

  4 and 5 show a state after the single-grocer shoe plate is attached to the crawler 25. FIG. As shown in the figure, on the outer surface of each triple-glosser type shoe plate 32, 32..., A different type of shoe plate having a shape and structure different from that of the triple-glosser type shoe plate 32, 32. In the example, single-grocer shoe plates 36, 36... Are detachably attached.

  FIG. 6 shows a fixing structure of the single-grouser shoe plate 36, and FIG. 7 shows a cross-sectional shape of the single-grocer shoe plate 36. As shown in FIG. As shown in FIG. 8, the single-grocer shoe plate 36 has a rectangular shape in plan view, and the longitudinal direction thereof coincides with the lateral width direction of the aircraft.

  The single-grocer shoe plate 36 has a shape and structure that is difficult to cause mud clogging even when traveling on a road surface such as a mountain road after rain. That is, as shown in FIG. 7, only one grouser (protrusion) 37 protrudes from the ground contact side surface of the single grouser shoe plate 36, and the grouser 37 extends in the longitudinal direction of the single grouser shoe plate 36. is doing.

  The single-grocer shoe plate 36 is detachably fastened to the outer surface of the triple-grocer shoe plate 32. That is, as shown in FIGS. 8 and 9, a pair of bolt holes respectively drilled in one end and the other end in the longitudinal direction of the triple-grocer shoe plate 32 and the single-grocer shoe plate 36 are provided with a pair of bolt holes. Fixing bolts 39, 39 pass therethrough. Then, by tightening the fixing bolts 39 and 39 with nuts 40 and 40 that are screwed into the bolts, the single-grouser shoe plate 36 is fastened and fixed to the outer surface of the triple-grocer shoe plate 32.

  In this embodiment, when the excavator 10 travels on a normal work site, for example, a road surface in an urban area, as shown in FIGS. 2 and 3, a single growthr is provided on the outer surface of each triple growthr type shoe plate 32. The mold shoe plate 36 cannot be attached.

  However, when a work site where mud clogging is likely to occur on the ground contact surface of the triple-grocer shoe plate 32, for example, when the excavator 10 travels on a mountain road after rain, a single-grocer shoe is disposed on the outer surface of each triple-grocer shoe plate 32. The plate 36 is fastened and fixed. Therefore, since the single-grocer shoe plate 36 having a shape and structure suitable for the road surface condition on the mountain road runs on the road surface, mud does not adhere to the single-grocer shoe plate 36 and the construction work by the hydraulic excavator 10 is smooth. To be done.

  As described above, according to the present invention, when an unusual single-grouser shoe plate suitable for road surface conditions such as mountain roads is used, the single-grocer shoe plate is disposed outside the triple-grocer shoe plate directly connected to the track link. Fix to the side with fixing bolts.

  Therefore, it is not necessary to remove the triple-glosser type shoe plate from the track link, the single-glosser type shoe plate can be easily mounted, and there is no need to perform welding work as in the conventional example.

  Thus, the mounting of the single growthr type shoe plate can be performed easily and quickly, and the working efficiency at the time of mounting the single growthr type shoe plate is remarkably improved.

  In addition, by attaching a single-grouser shoe plate that fits the conditions and conditions of the road surface of mountain roads and forest roads to the outer surface of the triple-grocer shoe plate, even when a hydraulic excavator runs on mountain roads and forest roads after rain, There is no risk of mud clogging the shoe plate surface. Therefore, the excavator becomes difficult to slip during traveling, and construction work can be performed efficiently.

  In the above embodiment, a single-grocer shoe plate is described as an example of a different type of shoe plate that is mounted on the outer surface of the triple-grocer shoe plate. However, the triple-grocer shoe plate has a different shape and structure. If there is, it is not limited to a single-glosser type shoe plate, and for example, a double-glosser type shoe plate can be mounted depending on road conditions.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  The present invention provides a crawler type traveling device in which track links are pin-connected to each other endlessly and a shoe plate is fixed to the outside of the track link, regardless of the shape / structure and mounting method of the track link. Applicable.

10 Hydraulic excavator (Construction machinery)
11 Lower traveling body 25 Crawler 30 Track link 31 Link pin 32 Triple grouser shoe plate 36 Single grouser shoe plate 37 Grouser (projection)
39 Fixing bolt

Claims (2)

  A shoe plate fixing structure of a crawler type traveling device in which track links are pin-connected in an endless manner and a shoe plate is fixed to an outer side surface of the track link, and the shoe plate is attached to the outer side surface of the shoe plate. Is a shoe plate fixing structure of a crawler type traveling device, wherein a different type of shoe plate of different shape and structure is fixed by a bolt so as to be detachable.   2. The shoe plate fixing structure for a crawler type traveling device according to claim 1, wherein the odd-shaped shoe plate is a single-grocer shoe plate.

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